SECTION 4 / MAINTENANCE - GUARANTEES
Maintenance
Caution: the two outer sections of the leading edge are not identical. They must be attached to their
correct leading edge tube. If they are reversed it will modify the angle of the washout tubes (“dive
sticks”), possibly making the wing uncontrollable.
Transport:
one of the principal causes of wear on the wings is vehicle transport. To minimize this
risk, use the provided protective padding during the disassembly and folding of the wing, use a
ladder (or similar) sufficiently padded, and avoid having the wing overhang the ends.
Maintenance:
cleaning is done with mild soap and water.
•
Regularly wash the wing in fresh water if you fly at the seaside. In this case the frequency
of the periodic maintenance must be increased.
•
In tropical regions, it can be useful to clean with a liquid fungicide.
After cleaning, the wing must be allowed to dry. It MUST NEVER placed in its cover when it
is wet.
•
Glue spots, of an old registration marking, for example, can be effectively removed by using
a rag soaked in trichloroethylene.
Storage:
in a dry dark area, or safe from the light (heat and UV), after making sure that the the
wing is completely dry.
Ageing:
exposure to ultraviolet radiation emitted by the sun and reflected by the moon, cause the
ageing of the fabric and the seams. As far as possible, park your aircraft under shelter, out of the
sun, between flights.
Four upper-surface fabric samples, composed of two fabric parts joined by a seam, are stitched
into the trailing edge, on both sides of the center of the wing. These bands can be cut out, if
necessary, during periodic maintenance in order to carry out resistance tests.
Periodic Checks:
Every 50 hours you must visually check:
•
The luff lines, the mast attachment hook and the trailing edge connections
•
All wing cables, the stainless swages and hearts
•
The nose plates
•
The upper-surface and keel-pocket (center of the wing) seams
•
All articulation and attaching bolts
•
The batten shock cord
•
The tension (very firm) of the outboard battens
After any violent or « heavy » landing, it is imperative that you check:
•
The nose plates
•
the straightness of the leading edges (a disassembly is necessary)
•
The straightness of the keel
•
The straightness of the control frame riser tubes
•
The straightness of the control bar,
•
The straightness of the cross spars
•
The profile of the battens (between right side and left side)
•
The nuts and bolts
•
The absence of any deformation thimble hearts of all the cables
•
The seams of the sail, in particular at the center of the wing
•
The hang assembly
MAUT – EN DYN 450
Edition : June 2005
Section : 4 - 01
